Nomilo Fishpond Biogoechemical Analysis

Author

Lysbeth Koster

Published

February 28, 2024

Interactive Code

Throughout this document, hover over the numbered annotations to the right of code chunks to reveal detailed explanations and comments about the code. Where drop-down italicized text is present, expand by pressing on arrow to see code.

Install Packages

install.packages(c("rio", "tidyverse", "janitor", "lubridate", "rmarkdown", "fs", "hms"))

Load Libraries

library(rio)
library(tidyverse)
library(janitor)
library(lubridate)
library(rmarkdown)
library(fs)
library(hms)
1
For importing excel data
2
For cleaning of data
3
For cleaning variable names
4
For cleaning dates
5
For displaying tables
6
For file path usage

Import Raw Data

Procedure

Define vector of files to import:

files_to_import <- dir_ls(path = "data/raw")

for (i in seq_along(files_to_import)) {
  cat(i, "= ", files_to_import[i], "\n")
}
1
Store the file paths of our raw data within the data/raw directory in files_to_import
2
Print each file path with its index 
1 =  data/raw/2024-02-28_dfs.RData 
2 =  data/raw/2024-02-28_ksf-clam-growth.xlsx 
3 =  data/raw/2024-02-28_ksf-compiled-data.xlsx 
4 =  data/raw/2024-02-28_ksf-oyster-cylinder-growth.xlsx 
5 =  data/raw/2024-02-28_profile-data.xlsx 
6 =  data/raw/2024-02-28_water-samples.xlsx 
7 =  data/raw/2024-02-28_weather-data.xlsx 
8 =  data/raw/2024-03-01_dfs-no-profiles.RData 
9 =  data/raw/2024-03-01_dfs_no_profiles.RData 
10 =  data/raw/2024-03-04_dfs-no-profiles.RData 
11 =  data/raw/~$2024-02-28_weather-data.xlsx

Use the purrr::map() function to iteratively import files in the files_to_import vector except for the profiles data and .RData files:

@iteratively-import-raw-data Code Chunk Execution Warning

The @iteratively-import-raw-data code chunk should only be ran once when raw data is updated because it takes long to execute. Therefore, run the @efficiently-load-raw-data code chunk instead to easily import up-to-date raw data.

dfs_no_profiles <- map(files_to_import[c(2:4, 6, 7)], import_list)
current_date <- format(Sys.Date(), "%Y-%m-%d")
save(dfs_no_profiles, file = paste0("data/raw/", current_date, "_dfs-no-profiles.RData"))
Ensure the Correct Index Value is Inputted Below

Refer to the output of the files_to_import data object to ensure you are inputting the correct index value corresponding to the file path that needs to be loaded.

Efficiently import up-to-date raw data:

load(files_to_import[10])

Rename datasets:

We will always use snakecase when naming our data objects and functions (e.g., data_object_name or function_name()).

names(dfs_no_profiles) <- gsub("data/raw/2024-02-28_|\\.xlsx$|\\.xls$", "", 
                               files_to_import[c(2:4, 6, 7)])
names(dfs_no_profiles) <- gsub("-", "_", names(dfs_no_profiles))
names(dfs_no_profiles)
1
Remove prefixes and file extensions
2
Replace hyphens with underscores
3
Check if names were outputted correctly 
[1] "ksf_clam_growth"            "ksf_compiled_data"         
[3] "ksf_oyster_cylinder_growth" "water_samples"             
[5] "weather_data"

Rename each sheet within each raw dataset to be lowercased and replace spaces with underscores:

dfs_no_profiles <- map(dfs_no_profiles, ~ set_names(.x, gsub(" ", "_", tolower(names(.x)))))

Create separate datasets by specifying the Excel sheet from each spreadsheet we want to tidy:

ksf_clam_growth_data <- dfs_no_profiles$ksf_clam_growth$sheet1
ksf_compiled_data <- dfs_no_profiles$ksf_compiled_data$full_data
ksf_oyster_cylinder_growth_data <- dfs_no_profiles$ksf_oyster_cylinder_growth$sheet1
water_samples_data <- dfs_no_profiles$water_samples$data_overview
weather_data <- dfs_no_profiles$weather_data$weather_ksf
tidal_data <- dfs_no_profiles$ksf_compiled_data$tides

We want to combine multiple sheets within the profiles Excel spreadsheet into one, therefore, we will import it separately:

sheets_to_import <- c("L1", "L2", "L3", "L4")

profiles_data <- profiles_data <- map_dfr(sheets_to_import, function(sheet_name) {
  import(files_to_import[5], which = sheet_name)
}) %>%
  bind_rows()
1
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2
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View Raw Data

Tidy Raw Data

Tidying Processes

Steps to clean data 
new_clam_var_names <- c(
  "sort_date", "color", "clams_in_count", "clams_in_lbs",  "clams_in_avg_per_lb",
  "clams_out_count", "clams_out_lbs", "clams_out_avg_per_lb", "growth_in_lbs", 
  "growth_pct", "sr", "days_btwn_sort"
  )

new_clam_date_col <- c(
  "2023-10-17", "2023-12-06", "2023-12-12", "2024-01-02",  "2024-01-10", "2024-01-24",
  "2024-01-31", "2024-02-08", "2024-02-13"
  )

ksf_clam_growth_data_tidied <- ksf_clam_growth_data %>%
  slice(-1) %>%
  setNames(new_clam_var_names) %>%
  mutate(date = as.Date(new_clam_date_col)) %>%
  dplyr::select(-sort_date) %>%
   pivot_longer(
    cols = c(
      clams_in_count, clams_in_lbs, clams_in_avg_per_lb,   clams_out_count, 
      clams_out_lbs, clams_out_avg_per_lb
      ),
    names_to = c("stage", ".value"),
    names_prefix = "clams_",
    names_sep = "_",
    values_to = "value"
  ) %>%
  mutate(stage = if_else(str_detect(stage, "in"), "In", "Out")) %>%
  rename(avg_per_lbs = avg) %>%
  mutate(across(c(color, stage), as.factor)) %>%
  mutate(across(c(count, lbs, avg_per_lbs, growth_in_lbs, growth_pct, sr),
                ~as.numeric(gsub("%", "", .)))) %>%
  arrange(date, color, stage) %>%
  dplyr::select(date, days_btwn_sort, color, stage, count, lbs, avg_per_lbs,
                growth_in_lbs, growth_pct, sr) %>%
  rename("days_btwn_clams_sort" = days_btwn_sort,
         "clams_color" = color,
         "clams_stage" = stage,
         "clams_count" = count,
         "weight" = lbs,
         "avg_weight" = avg_per_lbs,
         "clams_growth" = growth_in_lbs,
         "clams_sr" = sr)
         

paged_table(ksf_clam_growth_data_tidied)
1
Manually set variable names
2
Assign dates to new date column
3
Delete first row
4
Set date as correct variable type and pivot data set based on date range.
5
Assign In and Out to stage
6
Rename variable of average to average per lbs
7
Set stage and color as factor variable types
8
Set variables as numeric variable types
9
Arrange values by date, color, and stage
Steps to clean data 
ksf_compiled_data_tidied <- ksf_compiled_data %>% 
  rename_with(~gsub("\\s*\\([^\\)]+\\)", "", .x)) %>%
  janitor::clean_names() %>%
  rename(date = date_time) %>%
  mutate(date = as.Date(date)) %>%
  filter(date >= as.Date("2023-11-20") & date <= as.Date("2024-02-20")) %>%
  arrange(date) %>%
  dplyr::select(-c(external_voltage, wk_num, wind_dir,
                   spadd, outdoor_temperature, hourly_rain,
                   solar_radiation, resistivity, battery_capacity,
                   hour, daynum, data_pt, wind_sp, diradd,
                   wind_speed, wind_direction, tide, day, month, year)
                ) %>%
  dplyr::select(where(~ !anyNA(.))) %>%
  group_by(date) %>%
  summarise(across(where(is.numeric), \(x) mean(x, na.rm = TRUE))) %>%
  rename("ksf_salinity" = salinity,
         "ksf_rdo_saturation" = rdo_saturation,
         "ksf_rdo_concentration" = rdo_concentration,
         "ksf_actual_conductivity" = actual_conductivity,
         "ksf_total_dissolved_solids" = total_dissolved_solids,
         "ksf_ammonium" = ammonium,
         "ksf_barometric_pressure" = barometric_pressure,
         "ksf_oxygen_partial_pressure" = oxygen_partial_pressure,
         "ksf_specific_conductivity" = specific_conductivity,
         "ksf_density" = density,
         "ksf_chlorophyll_a_fluorescence" = chlorophyll_a_fluorescence,
         "ksf_ammonium_m_v" = ammonium_m_v)

paged_table(ksf_compiled_data_tidied)
1
Clean variable names by removing everything in parentheses, using lowercase and underscores in place of spaces
2
Rename the date_time variable to date, filter to desired date range and sort by date
3
Remove unnecessary variables
4
Remove columns with containing all NA values
5
Group by date and calculate the average of every variable for each day
Steps to clean data 
oyster_var_names <- c(
  "date", "oyster_large_weight", "oyster_large_gain", "oyster_small_weight",
  "oyster_small_gain", "oyster_chlorophyll"
  )

ksf_oyster_cylinder_growth_data_tidied <- ksf_oyster_cylinder_growth_data %>% 
  dplyr::select(c(1, 4, 5, 8, 9, 12)) %>%
  slice(-1) %>%
  setNames(oyster_var_names) %>%
  pivot_longer(
    cols = c(oyster_large_weight, oyster_large_gain,
             oyster_small_gain,
             oyster_small_weight),
    names_to = c("oyster_size", ".value"),
    names_prefix = "oyster_",
    names_sep = "_",
    values_to = "value"
  ) %>%
  mutate(oyster_size = if_else(str_detect(oyster_size, "small"), "Small", "Large")) %>%
  mutate(date = as.Date(date),
         oyster_size = as.factor(oyster_size),
         across(c(weight, gain), as.numeric)
        ) %>%
  filter(date >= as.Date("2023-11-20") & date <=
           as.Date("2024-02-14")) %>%
   mutate_if(is.numeric, ~replace_na(., 0)) %>%
mutate(weight = weight * 0.00220462) %>% 
  rename("growth_pct" = gain)

paged_table(ksf_oyster_cylinder_growth_data_tidied)
1
Manually set variable names
2
Select desired columns and remove first row
3
Convert from wide to long format
4
Create a new variable that differentiates oyster size
5
Adjust data types to numeric and factor
6
Filter to desired date range
7
Fill NA values as 0

Address the NA values before merge

Steps to clean data 
water_samples_data_tidied <- water_samples_data %>%
  slice(-c(44:52)) %>% 
  rename_with(~gsub("\\s*\\([^\\)]+\\)", "", .x)) %>%
  janitor::clean_names() %>%
  mutate(
    date = if_else(date == "44074",
            as.character(as.Date("2024-01-09")),
            format(dmy(date), "%Y-%m-%d"))
  ) %>%
  mutate(sample_id = 1:nrow(.)) %>%
  mutate(date = as.Date(date),
         across(c(nomilo_id, location, round, depth), as.factor),
         tube_name = as.character(tube_name),
         tube_name = ifelse(is.na(tube_name), "No Name", tube_name),
         tube_name = as.factor(tube_name)) %>%
  mutate_if(is.numeric, ~replace_na(., 0)) %>%
  select(-c(1,2))

paged_table(water_samples_data_tidied)
1
Clean variable names by removing everything in parentheses, using lowercase and underscores in place of spaces
2
Replaces incorrect date values and format as YYYY-MM-DD
3
Add values for sample ID
4
Set correct variable types
5
Replaces NA values with 0
Steps to clean data 
weather_data_tidied <- weather_data %>% 

janitor::clean_names() %>%
   unite(date, year, month, day, sep = "-") %>%
  mutate(date = ymd(date)) %>%
   select(-c(1, 3)) %>%
  rename("outdoor_temperature" = outdoor_temp_f) %>%
   mutate(outdoor_temperature = (outdoor_temperature - 32) * (5/9)) %>%
  group_by(date) %>%
  summarise(across(where(is.numeric), \(x) mean(x, na.rm = TRUE))) %>%
  slice(-1)

paged_table(weather_data_tidied)
1
Clean variable names
2
Merge separate day, month, year columns into one column variable and format as YYYY-MM-DD.
3
Cut columns
4
Rename outdoor temperature and convert from Fahrenheit to Celcius
5
Group by date and then take average values per day
6
Cut first row
Steps to clean data 
new_profile_var_names <- c("depth", "water_temperature", "dissolved_oxygen", "salinity", "conductivity", "visibility", "location", "date")

profiles_data_tidied <- profiles_data %>%
  select(-c(6, 8)) %>%
  mutate(
    temp_column1 = NA_character_,
    temp_column2 = NA_character_
  ) %>%
  setNames(new_profile_var_names) %>%
  mutate(
    location = ifelse(depth == "Location", water_temperature, NA_character_), 
    date = ifelse(depth == "Date",  water_temperature, NA_character_)
  ) %>%
  fill(location, date, .direction = "down") %>%
  filter(depth != "Location", depth != "Date") %>%
  mutate(
    location = case_when(
      location == "L1 Northwest buoy" ~ "back buoy",
      location == "L2 Middle Buoy" ~ "mid buoy",
      location == "L3 Production Dock" ~ "production dock",
      location == "L4 Auwai" ~ "auwei",
      TRUE ~ location
    ),
    date = case_when(
      date %in% c("45258", "2023-11-28") ~ "2023-11-28",
      date %in% c("45282", "2023-12-21") ~ "2023-12-22",
      date %in% c("45536", "2024-01-09") ~ "2024-01-09",
      date %in% c("30/1/24", "30/01/24") ~ "2024-01-30",
      date %in% c("20/02/24", "20/2/24") ~ "2024-02-20",
      TRUE ~ date
    )) %>%
  mutate(
    date = as.Date(date, format = "%Y-%m-%d"),
    conductivity = case_when(
      row_number() %in% c(1:11) ~ NA_character_,
      TRUE ~ as.character(conductivity)
    )
  ) %>%
  filter(!(depth %in% c("Samples", "Depth"))) %>%
  mutate(date = as.Date(date),
         across(c(depth, location), as.factor),
         across(c(water_temperature,  dissolved_oxygen, salinity, 
                  conductivity,visibility),  as.numeric)) %>%
   fill(visibility, .direction = "down") %>%
  mutate(visibility = if_else(date == "2023-11-28",  0, visibility)) %>%
   mutate_if(is.numeric, ~replace_na(., 0))
    

paged_table(profiles_data_tidied)
1
Set new variable names manually
2
Delete unnecessary columns
3
Temporarily create two new columns to replace the ones we deleted
4
Assign new profile variable names to rename variables in data set
5
Takes location from one column of location and date data, and assigns it to corresponding data of another column.
6
Fill values of temperature downwards in newly created date and location column.
7
Gets rid of the ‘location’ and ‘date’ rows that had empty values.
8
Renames values
9
Removes turbidity data rows 1:11
10
Looks for rows containing samples and depth names and negate these values.
11
Sets correct data types for each variable
12
Fills values from the temperature downwards into the newly created columns for date and location
13
Sets missing data and NA values as 0
Steps to clean data 
tidal_data_tidied <- tidal_data %>% 

janitor::clean_names() %>%
  mutate(date = as.Date(date, format = "%Y-%m-%d"))  %>%
   filter(date >= as.Date("2023-11-20") & date <=  as.Date("2024-02-20")) %>%
  select(-2) %>%
  mutate(time = as_hms(format(time, "%H:%M:%S")),
         high_low = as.factor(high_low))
  
paged_table(tidal_data_tidied)
1
Clean variable names
2
Set date as correct variable type and format YYYY-MM-DD
3
Filter to desired date range
4
Cut column
5
Set time as time variable type
6
Set variable as factor type

Merge Tidied Datasets

first_merge <- reduce(list(ksf_clam_growth_data_tidied, ksf_oyster_cylinder_growth_data_tidied), 
                      full_join, by = c("date", "weight", "growth_pct"))

second_merge <- reduce(list(first_merge, profiles_data_tidied, water_samples_data_tidied), 
                       full_join)

final_merge <- reduce(list(second_merge, ksf_compiled_data_tidied, tidal_data_tidied, weather_data_tidied), 
                      full_join, by = "date")

Export Tidied Datasets

Export tidied datasets to CSV into data/tidied folder:

source("code/functions/export_to_csv.R")

dfs_to_export <- list(
  ksf_clam_growth_data_tidied = ksf_clam_growth_data_tidied,
  ksf_compiled_data_tidied = ksf_compiled_data_tidied,
  ksf_oyster_cylinder_growth_data_tidied = ksf_oyster_cylinder_growth_data_tidied,
  water_samples_data_tidied = water_samples_data_tidied,
  profiles_data_tidied = profiles_data_tidied
)

imap(dfs_to_export, ~ export_to_csv(.x, .y, "data/tidied"))
1
List of dataframes we want to export as CSV files
2
Iterate the export_to_csv(df, df_name, dir_path) function over each dataframe. .x refers to the dataframe. .y refers to the name of the dataframe. These are passed to export_to_csv() function along with the desired directory path.

Export merged final data set into data/outputs folder.

Data Dictionary

Exploratory Data Analysis

Correlational Analysis

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